Questions and Answers
What is produced by the choroid plexus in the ventricles?
CSF
Where does CSF flow from the 3rd ventricle?
Through the cerebral aqueduct into the 4th ventricle
What space does CSF enter after passing through the paired lateral apertures or the single median aperture?
Subarachnoid space
What are the functions of CSF as it flows through the subarachnoid space?
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Where does excess CSF flow after the subarachnoid space?
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Study Notes
Cerebrospinal Fluid (CSF) Production and Circulation
- CSF is produced by the choroid plexus found within the brain's ventricles.
- The flow of CSF begins in the 3rd ventricle, moving through the cerebral aqueduct to the 4th ventricle.
- CSF exits the 4th ventricle into the subarachnoid space via paired lateral apertures or a single median aperture, also reaching the central canal of the spinal cord.
- In the subarachnoid space, CSF serves two main functions: it removes metabolic waste and provides buoyancy to the brain, reducing its effective weight.
- Excess CSF is absorbed by arachnoid villi which drain into the dural venous sinuses, aided by the higher pressure of CSF in the subarachnoid space to ensure unidirectional flow.
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Description
Test your knowledge on the production and circulation of cerebrospinal fluid (CSF) with these flashcards. Learn about its formation in the ventricles and the flow through the brain's structures, including the choroid plexus, aqueducts, and subarachnoid space.
